Christina Aguilera Looks Skinnier Than Ever at Billboard Music Awards

It's an Xtina Renaissance! Christina Aguilera took the stage at the Billboard Music Awards in Las Vegas on Sunday, May 19 -- and proved that her much-ogled, slimmed-down body is no Photoshop trick. Crooning "Feel This Moment" with Pitbull, the 32-year-old singer and mom showcased, once again, her slimmed, toned figure in a short black skirt and black top. She accentuated her v. 2013 look with an understated makeup look.

The superstar has been slowly revealing her slimmed-down over the past several months: Last week via Twitter and Facebook, she posed in in a bra top and black pencil skirt, checking out an ocean view from her balcony. She also made comment-causing appearances at the Time 100 Gala and a March Voice event.